Q.

AlF63- exists, while BF63- does not. Choose the most appropriate reason.

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya

a

Boron is smaller in size

b

Boron cannot expand it valence shell

c

Aluminium shows variable valency

d

Aluminium is more electropositive

answer is B.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

All the options except (c) are correct but the most appropriate reason is that boron cannot expand its valence shell and its maximum valency is limited to 4. While Al can expand its valence shell and hence can form AlF63-.
Watch 3-min video & get full concept clarity
score_test_img

Get Expert Academic Guidance – Connect with a Counselor Today!

whats app icon
AlF63- exists, while BF63- does not. Choose the most appropriate reason.